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Question
Write a short note on the following type of element –
noble gases
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Solution
Element of 18th or O group (He, Ne, Ar, Kr, Xe, Rn) is called noble gases as they are inert gases and have valency 0. All are mono-atomic.
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| List – I | List – II |
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| 2. Highly reactive, univalent non-metals | B: Transition elements |
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| F: Actinide series |
